* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background: #f5f9ff;
    color: #1f2937;
}

/* ANNOUNCEMENT */

.announcement {
    background: #f4b400;
    color: #1f2937;
    text-align: center;
    padding: 10px;
    font-weight: bold;
    font-size: 14px;
}

/* HEADER */

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 8%;
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 10;
}

.logo {
    font-size: 26px;
    font-weight: bold;
    color: #1e3a8a;
}

.logo span {
    font-weight: 800;
}

nav a {
    margin-left: 20px;
    text-decoration: none;
    color: #1f2937;
    font-weight: 600;
}

nav a:hover {
    color: #1e3a8a;
}

/* HERO */

.hero {
    min-height: 590px;
    background: linear-gradient(135deg, #1e3a8a, #2563eb);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 75px 8%;
    text-align: center;
}

.hero-content {
    max-width: 900px;
}

.hero-tag {
    display: inline-block;
    background: rgba(255,255,255,0.18);
    padding: 8px 16px;
    border-radius: 999px;
    font-weight: bold;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: 64px;
    line-height: 1.12;
    margin-bottom: 26px;
}

.hero-text {
    font-size: 21px;
    line-height: 1.6;
    margin-bottom: 42px;
}

button {
    background: #f4b400;
    border: none;
    padding: 14px 30px;
    border-radius: 12px;
    font-weight: bold;
    cursor: pointer;
    font-size: 15px;
}

button:hover {
    background: #d99e00;
}

.search-box {
    width: 540px;
    max-width: 100%;
    margin: 50px auto 0;
}

.search-box input {
    width: 100%;
    padding: 18px 22px;
    border-radius: 14px;
    border: none;
    font-size: 17px;
    outline: none;
    box-shadow: 0 10px 28px rgba(0,0,0,0.22);
}

/* SUBJECTS */

.subjects {
    padding: 75px 8%;
}

.subjects h2,
.latest-section h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 16px;
    color: #1e3a8a;
}

.section-intro {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 45px;
    line-height: 1.7;
    color: #4b5563;
}

.cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
}

.card {
    background: white;
    padding: 28px;
    border-radius: 20px;
    box-shadow: 0 6px 18px rgba(0,0,0,0.08);
    transition: 0.3s;
    border: 2px solid transparent;
}

.card:hover {
    transform: scale(1.03);
    border-color: #f4b400;
}

.featured-card {
    border-color: #f4b400;
}

.level {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: bold;
    margin-bottom: 16px;
}

.beginner {
    background: #dcfce7;
    color: #166534;
}

.intermediate {
    background: #fef3c7;
    color: #92400e;
}

.advanced {
    background: #fee2e2;
    color: #991b1b;
}

.card h3 {
    color: #1e3a8a;
    margin-bottom: 14px;
    font-size: 23px;
}

.card ul {
    list-style: none;
    margin-bottom: 24px;
}

.card li {
    padding: 5px 0;
    color: #4b5563;
}

.card li::before {
    content: "✔ ";
    color: #1e3a8a;
    font-weight: bold;
}

/* LATEST */

.latest-section {
    padding: 65px 8%;
    background: white;
}

.latest-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 35px;
}

.latest-card {
    background: #f5f9ff;
    padding: 24px;
    border-radius: 18px;
    box-shadow: 0 4px 14px rgba(0,0,0,0.06);
}

.latest-card span {
    color: #1e3a8a;
    font-weight: bold;
    font-size: 14px;
}

.latest-card h3 {
    margin: 12px 0;
    color: #1e3a8a;
}

.latest-card p {
    color: #4b5563;
    line-height: 1.6;
}

/* TOPIC PAGE */

.topic-hero {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
    padding: 70px 8%;
    background: linear-gradient(135deg, #1e3a8a, #2563eb);
    color: white;
    align-items: center;
}

.topic-hero h1 {
    font-size: 48px;
    margin: 10px 0;
}

.topic-hero p {
    font-size: 18px;
    line-height: 1.6;
}

.topic-card {
    background: white;
    color: #1f2937;
    padding: 25px;
    border-radius: 18px;
    box-shadow: 0 6px 18px rgba(0,0,0,0.15);
}

.topic-card h3 {
    color: #1e3a8a;
    margin-bottom: 12px;
}

.content-section {
    padding: 60px 8%;
}

.content-section h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 35px;
    color: #1e3a8a;
}

.learning-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.mini-card {
    background: white;
    padding: 18px;
    border-radius: 16px;
    box-shadow: 0 4px 14px rgba(0,0,0,0.08);
    font-weight: bold;
    text-align: center;
}

.timeline {
    max-width: 850px;
    margin: auto;
}

.step {
    display: flex;
    gap: 18px;
    background: white;
    padding: 18px;
    margin-bottom: 14px;
    border-radius: 16px;
    box-shadow: 0 4px 14px rgba(0,0,0,0.08);
}

.step span {
    background: #f4b400;
    color: #1f2937;
    min-width: 36px;
    height: 36px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-weight: bold;
}

.step h3 {
    color: #1e3a8a;
    margin-bottom: 6px;
}

/* FOOTER */

footer {
    background: #1e3a8a;
    color: white;
    padding: 45px 8%;
    text-align: center;
}

.footer-content h2 {
    margin-bottom: 10px;
}

.footer-content p {
    margin-bottom: 18px;
}

.footer-links {
    margin-bottom: 20px;
}

.footer-links a {
    color: white;
    text-decoration: none;
    margin: 0 12px;
    font-weight: bold;
}

.footer-links a:hover {
    text-decoration: underline;
}

.copyright {
    font-size: 14px;
    opacity: 0.85;
}

/* MOBILE */

@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: 15px;
    }

    nav a {
        display: inline-block;
        margin: 8px;
    }

    .hero {
        min-height: auto;
        padding: 60px 6%;
    }

    .hero h1 {
        font-size: 38px;
    }

    .hero-text {
        font-size: 18px;
    }

    .cards,
    .latest-grid,
    .learning-grid {
        grid-template-columns: 1fr;
    }

    .topic-hero {
        grid-template-columns: 1fr;
    }

    .topic-hero h1 {
        font-size: 36px;
    }
}
.topic-meta {
    margin-top: 25px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.topic-meta span {
    background: rgba(255,255,255,0.18);
    padding: 8px 12px;
    border-radius: 999px;
    font-weight: bold;
    font-size: 14px;
}

.topic-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 30px;
    padding: 60px 8%;
}

.topic-sidebar {
    background: white;
    padding: 22px;
    border-radius: 18px;
    box-shadow: 0 4px 14px rgba(0,0,0,0.08);
    height: fit-content;
    position: sticky;
    top: 100px;
}

.topic-sidebar h3 {
    color: #1e3a8a;
    margin-bottom: 18px;
}

.topic-sidebar a {
    display: block;
    text-decoration: none;
    color: #1f2937;
    padding: 10px 0;
    border-bottom: 1px solid #e5e7eb;
    font-weight: 600;
}

.topic-sidebar a:hover {
    color: #1e3a8a;
}

.topic-content {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.lesson-section {
    background: white;
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 4px 14px rgba(0,0,0,0.08);
}

.lesson-section h2 {
    color: #1e3a8a;
    margin-bottom: 12px;
}

.lesson-section p {
    line-height: 1.7;
    color: #4b5563;
}

.section-note {
    margin-bottom: 18px;
    font-style: italic;
}

.info-box,
.example-box,
.success-box,
.warning-box,
.tip-box,
.coming-box,
.formula-card {
    margin-top: 18px;
    padding: 16px;
    border-radius: 14px;
    line-height: 1.6;
}

.info-box {
    background: #eff6ff;
    border-left: 5px solid #2563eb;
}

.example-box {
    background: #fef3c7;
    border-left: 5px solid #f4b400;
}

.success-box {
    background: #dcfce7;
    border-left: 5px solid #22c55e;
}

.warning-box {
    background: #fee2e2;
    border-left: 5px solid #ef4444;
}

.tip-box {
    background: #fef3c7;
    border-left: 5px solid #f4b400;
}

.coming-box {
    background: #f3f4f6;
    color: #4b5563;
    font-weight: bold;
}

.formula-card {
    background: #f5f9ff;
    border-left: 5px solid #1e3a8a;
}

.note-card,
.worked-example {
    background: #f5f9ff;
    padding: 22px;
    border-radius: 16px;
    margin-top: 18px;
}

.note-card h3,
.worked-example h3 {
    color: #1e3a8a;
    margin-bottom: 12px;
}

.check-list {
    list-style: none;
    margin-top: 15px;
}

.check-list li {
    background: #f5f9ff;
    padding: 12px;
    border-radius: 12px;
    margin-bottom: 10px;
    font-weight: 600;
}

.check-list li::before {
    content: "✔ ";
    color: #1e3a8a;
    font-weight: bold;
}

@media (max-width: 900px) {
    .topic-layout {
        grid-template-columns: 1fr;
    }

    .topic-sidebar {
        position: static;
    }
}
.active {
    color: #1e3a8a;
    font-weight: 800;
}

.card-link {
    text-decoration: none;
    color: inherit;
}

.breadcrumb {
    padding: 18px 8%;
    background: #ffffff;
    font-size: 14px;
    color: #4b5563;
}

.breadcrumb a {
    text-decoration: none;
    color: #1e3a8a;
    font-weight: bold;
}

.breadcrumb span {
    margin: 0 8px;
}

.topic-nav {
    display: flex;
    justify-content: space-between;
    gap: 15px;
    margin-top: 15px;
}

.topic-nav a {
    background: white;
    color: #1e3a8a;
    text-decoration: none;
    padding: 14px 18px;
    border-radius: 14px;
    font-weight: bold;
    box-shadow: 0 4px 14px rgba(0,0,0,0.08);
}

.topic-nav .disabled {
    color: #9ca3af;
    pointer-events: none;
}

#backToTop {
    position: fixed;
    right: 22px;
    bottom: 22px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    display: none;
    z-index: 20;
    padding: 0;
}
/* PHASE 2 ADDITIONS */

.active {
    color: #1e3a8a;
    font-weight: 800;
}

.card-link,
.hub-card {
    text-decoration: none;
    color: inherit;
}

.progress-wrap {
    margin: 18px 0 22px;
}

.progress-label {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    margin-bottom: 8px;
    color: #4b5563;
}

.progress-bar {
    height: 9px;
    background: #e5e7eb;
    border-radius: 999px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: #f4b400;
    border-radius: 999px;
}

.progress-fill.empty {
    background: #d1d5db;
}

.breadcrumb {
    padding: 18px 8%;
    background: #ffffff;
    font-size: 14px;
    color: #4b5563;
}

.breadcrumb a {
    text-decoration: none;
    color: #1e3a8a;
    font-weight: bold;
}

.breadcrumb span {
    margin: 0 8px;
}

.topic-nav {
    display: flex;
    justify-content: space-between;
    gap: 15px;
    margin-top: 15px;
}

.topic-nav a {
    background: white;
    color: #1e3a8a;
    text-decoration: none;
    padding: 14px 18px;
    border-radius: 14px;
    font-weight: bold;
    box-shadow: 0 4px 14px rgba(0,0,0,0.08);
}

.topic-nav .disabled {
    color: #9ca3af;
    pointer-events: none;
}

#backToTop {
    position: fixed;
    right: 22px;
    bottom: 22px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    display: none;
    z-index: 20;
    padding: 0;
}

.mobile-menu-btn {
    display: none;
    margin: 20px auto 0;
}

.page-hero {
    padding: 80px 8%;
    background: linear-gradient(135deg, #1e3a8a, #2563eb);
    color: white;
    text-align: center;
}

.page-hero h1 {
    font-size: 48px;
    margin: 20px 0;
}

.page-hero p {
    max-width: 760px;
    margin: auto;
    font-size: 19px;
    line-height: 1.7;
}

.hub-section {
    padding: 70px 8%;
}

.hub-grid,
.paper-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.hub-card,
.paper-card {
    background: white;
    padding: 28px;
    border-radius: 20px;
    box-shadow: 0 6px 18px rgba(0,0,0,0.08);
    transition: 0.3s;
}

.hub-card:hover,
.paper-card:hover {
    transform: translateY(-5px);
}

.hub-card h3,
.paper-card h3 {
    color: #1e3a8a;
    margin-bottom: 14px;
}

.hub-card p,
.paper-card p {
    color: #4b5563;
    line-height: 1.6;
    margin-bottom: 18px;
}

.hub-card span {
    color: #1e3a8a;
    font-weight: bold;
}

.locked {
    opacity: 0.85;
}

.legal-note {
    margin-top: 35px;
    background: #fff7ed;
    border-left: 5px solid #f4b400;
    padding: 18px;
    border-radius: 14px;
    line-height: 1.7;
}

/* Mobile phase 2 */
@media (max-width: 900px) {
    .hub-grid,
    .paper-grid {
        grid-template-columns: 1fr;
    }

    .mobile-menu-btn {
        display: block;
    }

    .topic-sidebar {
        display: none;
    }

    .topic-sidebar.show {
        display: block;
    }

    .topic-nav {
        flex-direction: column;
    }

    .page-hero h1 {
        font-size: 36px;
    }
}
.level-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.level-card {
    background: white;
    padding: 30px;
    border-radius: 22px;
    box-shadow: 0 6px 18px rgba(0,0,0,0.08);
    transition: 0.3s;
}

.level-card:hover {
    transform: translateY(-6px);
}

.level-card h2 {
    color: #1e3a8a;
    margin-bottom: 14px;
}

.level-card p {
    color: #4b5563;
    line-height: 1.7;
    margin-bottom: 22px;
}

.form-section {
    background: white;
    padding: 30px;
    border-radius: 22px;
    box-shadow: 0 6px 18px rgba(0,0,0,0.08);
    margin-bottom: 30px;
}

.form-section h2 {
    color: #1e3a8a;
    margin-bottom: 20px;
}

.topic-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.topic-list a {
    background: #f5f9ff;
    color: #1e3a8a;
    text-decoration: none;
    padding: 10px 14px;
    border-radius: 999px;
    font-weight: bold;
}

.topic-list a:hover {
    background: #f4b400;
    color: #1f2937;
}

@media (max-width: 900px) {
    .level-grid {
        grid-template-columns: 1fr;
    }
}
.topic-intro {
    padding: 45px 8% 20px;
    background: #f5f9ff;
}

.topic-intro h1 {
    color: #1e3a8a;
    font-size: 42px;
    margin-bottom: 14px;
}

.topic-intro p {
    max-width: 850px;
    color: #4b5563;
    line-height: 1.7;
    font-size: 18px;
}

.lesson-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.lesson-card {
    background: #f5f9ff;
    padding: 22px;
    border-radius: 18px;
    text-decoration: none;
    color: inherit;
    box-shadow: 0 4px 14px rgba(0,0,0,0.06);
    transition: 0.3s;
    border: 2px solid transparent;
}

.lesson-card:hover {
    transform: translateY(-5px);
    border-color: #f4b400;
}

.lesson-card h3 {
    color: #1e3a8a;
    margin-bottom: 10px;
}

.lesson-card p {
    color: #4b5563;
    line-height: 1.6;
    margin-bottom: 14px;
}

.lesson-card span {
    color: #1e3a8a;
    font-weight: bold;
    font-size: 14px;
}

.lesson-card.locked {
    opacity: 0.75;
}

@media (max-width: 900px) {
    .lesson-grid {
        grid-template-columns: 1fr;
    }
}
/* ============================= */
/* TOPIC LEARNING PATH */
/* ============================= */

.section-note {
    margin-bottom: 40px;
    line-height: 1.8;
}

.path-column {
    padding: 25px 0 45px 0;
    border-bottom: 1px solid #e5e7eb;
}

.path-column:last-child {
    border-bottom: none;
}

.path-column h3 {
    color: #1e3a8a;
    font-size: 1.8rem;
    margin-bottom: 25px;
}

.lesson-list {
    margin-left: 35px;
}

.lesson-list li {
    margin-bottom: 18px;
    font-size: 1.12rem;
    line-height: 1.9;
    color: #374151;
}

.lesson-list a {
    text-decoration: none;
    color: #1f2937;
    transition: 0.25s;
}

.lesson-list a:hover {
    color: #2563eb;
    padding-left: 8px;
    font-weight: 600;
}
/* ============================= */
/* LESSON PAGE READING LAYOUT */
/* ============================= */

.lesson-hero,
.lesson-card {
    max-width: 950px;
    margin-left: auto;
    margin-right: auto;
}

.lesson-hero {
    padding: 55px 45px;
    margin-top: 35px;
    margin-bottom: 35px;
    background: linear-gradient(135deg, #fff7e6, #ffffff);
    border-radius: 22px;
    border: 1px solid #f3d9a4;
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}

.lesson-hero h1 {
    font-size: 3rem;
    color: #123c7c;
    margin-bottom: 18px;
}

.lesson-hero p {
    font-size: 1.15rem;
    line-height: 1.8;
}

.lesson-label {
    display: inline-block;
    background: #fff0c2;
    color: #7a4b00;
    padding: 10px 18px;
    border-radius: 50px;
    font-weight: 700;
    margin-bottom: 18px;
}

.lesson-card {
    background: #ffffff;
    padding: 38px 42px;
    margin-bottom: 32px;
    border-radius: 22px;
    border: 1px solid #e5e7eb;
    box-shadow: 0 8px 24px rgba(0,0,0,0.05);
}

.lesson-card h2 {
    color: #123c7c;
    margin-bottom: 18px;
}

.lesson-card p,
.lesson-card li {
    font-size: 1.08rem;
    line-height: 1.8;
}

@media (max-width: 768px) {
    .lesson-hero,
    .lesson-card {
        max-width: 92%;
        padding: 28px 22px;
    }

    .lesson-hero h1 {
        font-size: 2.2rem;
    }
}
/* ============================= */
/* QUADRATIC SQUARE DIAGRAM */
/* ============================= */

.shape-demo {
    max-width: 420px;
    margin: 28px auto;
    text-align: center;
}

.square-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 14px;
}

.square-label-top,
.square-label-side {
    font-weight: 700;
    color: #123c7c;
}

.square-label-top {
    margin-bottom: 10px;
}

.square-label-side {
    writing-mode: vertical-rl;
    transform: rotate(180deg);
}

.math-square {
    width: 170px;
    aspect-ratio: 1 / 1;
    border: 3px solid #123c7c;
    background: #fff7e6;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    font-size: 1.5rem;
    font-weight: 800;
    color: #123c7c;
}

.larger-square {
    width: 210px;
}

@media (max-width: 600px) {
    .math-square {
        width: 145px;
    }

    .larger-square {
        width: 175px;
    }
}
/* ============================= */
/* FOIL METHOD */
/* ============================= */

.foil-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin: 24px 0;
}

.foil-step {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 18px;
    border: 1px solid #d9e3f3;
    border-radius: 14px;
    background: #f8fbff;
}

.foil-step p {
    margin: 8px 0 0;
}

.foil-letter {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 42px;
    height: 42px;
    border-radius: 50%;
    background: #123c7c;
    color: white;
    font-weight: 800;
    font-size: 1.1rem;
}

@media (max-width: 600px) {
    .foil-grid {
        grid-template-columns: 1fr;
    }
}
/* ============================= */
/* FEATURED RESOURCE CARD */
/* ============================= */

.resource-feature-card {
    display: flex;
    align-items: flex-start;
    gap: 22px;
    margin-top: 24px;
    padding: 28px;
    border: 1px solid #dce5f2;
    border-radius: 18px;
    background: #f8fbff;
}

.resource-feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 64px;
    height: 64px;
    border-radius: 16px;
    background: #fff2c7;
    font-size: 2rem;
}

.resource-feature-content h3 {
    margin: 6px 0 10px;
}

.resource-label {
    margin: 0;
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #496b9d;
}

.resource-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 18px 0 22px;
}

.resource-tags span {
    padding: 7px 11px;
    border-radius: 999px;
    background: white;
    border: 1px solid #dce5f2;
    font-size: 0.88rem;
}

@media (max-width: 600px) {
    .resource-feature-card {
        flex-direction: column;
        padding: 22px;
    }
}
/* ============================= */
/* WORKSHEET LIBRARY */
/* ============================= */

.worksheet-library {
    max-width: 1180px;
    margin: 0 auto;
    padding: 70px 24px;
}

.worksheet-intro {
    max-width: 720px;
    margin-bottom: 38px;
}

.worksheet-intro h2 {
    margin: 8px 0 12px;
    color: #102f5e;
    font-size: clamp(1.8rem, 3vw, 2.5rem);
}

.worksheet-intro p {
    line-height: 1.75;
}

.section-tag {
    margin: 0;
    color: #496b9d;
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.worksheet-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
}

.worksheet-card {
    display: flex;
    flex-direction: column;
    padding: 30px;
    border: 1px solid #dce5f2;
    border-radius: 22px;
    background: white;
    box-shadow: 0 10px 30px rgba(28, 57, 92, 0.07);
}

.available-worksheet {
    border-color: #b9d4f5;
    background: linear-gradient(145deg, #ffffff, #f6faff);
}

.coming-worksheet {
    background: #fafbfc;
}

.worksheet-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
    margin-bottom: 22px;
}

.worksheet-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 62px;
    height: 62px;
    border-radius: 17px;
    background: #e9f2ff;
    color: #123c7c;
    font-size: 1.45rem;
    font-weight: 800;
}

.muted-icon {
    background: #eef1f5;
    color: #697587;
}

.worksheet-status {
    padding: 7px 12px;
    border-radius: 999px;
    font-size: 0.76rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.worksheet-status.available {
    background: #dff5e7;
    color: #207744;
}

.worksheet-status.coming {
    background: #eceff3;
    color: #687383;
}

.worksheet-subject {
    margin: 0 0 6px;
    color: #496b9d;
    font-size: 0.83rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.07em;
}

.worksheet-card h3 {
    margin: 0 0 13px;
    color: #102f5e;
    font-size: 1.35rem;
}

.worksheet-card > p:not(.worksheet-subject) {
    margin: 0;
    line-height: 1.7;
}

.worksheet-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
    margin: 22px 0;
}

.worksheet-tags span {
    padding: 7px 11px;
    border: 1px solid #dce5f2;
    border-radius: 999px;
    background: white;
    color: #50647d;
    font-size: 0.82rem;
}

.worksheet-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    align-self: flex-start;
    margin-top: auto;
    padding: 12px 18px;
    border-radius: 11px;
    background: #123c7c;
    color: white;
    font-weight: 800;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.worksheet-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 18px rgba(18, 60, 124, 0.18);
}

.worksheet-help {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 24px 75px;
}

.worksheet-help-card {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 28px;
    border-radius: 20px;
    background: #fff8e7;
    border: 1px solid #f0dfb5;
}

.worksheet-help-icon {
    font-size: 2rem;
}

.worksheet-help-card h2 {
    margin: 0 0 8px;
    color: #102f5e;
}

.worksheet-help-card p {
    margin: 0;
    line-height: 1.7;
}

@media (max-width: 760px) {
    .worksheet-grid {
        grid-template-columns: 1fr;
    }

    .worksheet-library {
        padding: 50px 18px;
    }

    .worksheet-card {
        padding: 24px;
    }

    .worksheet-help {
        padding: 0 18px 55px;
    }

    .worksheet-help-card {
        flex-direction: column;
    }
}